package com.wxw.tools;


import org.apache.shiro.web.servlet.ShiroHttpServletRequest;
import org.apache.shiro.web.util.WebUtils;
import org.apache.shiro.web.session.mgt.DefaultWebSessionManager;
import org.springframework.util.StringUtils;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import java.io.Serializable;
 
public class ShiroSessionManager extends DefaultWebSessionManager {
 
    //这个是请求头中保存sessionid的名称
    private static final String AUTHORIZATION = "authToken";
 
    private static final String REFERENCED_SESSION_ID_SOURCE = "Stateless request";
 
    public ShiroSessionManager() {
        super();
    }
 
    /**
     * 重写返回sessionid的方法
     * @param request
     * @param response
     * @return
     */
    @Override
    protected Serializable getSessionId(ServletRequest request, ServletResponse response) {
        //读取请求头中的sessionid
        String id = WebUtils.toHttp(request).getHeader(AUTHORIZATION);
        System.out.println("id：" + id);
        if (StringUtils.isEmpty(id)) {
            //如果没有携带id参数则按照父类的方式在cookie进行获取
            System.out.println("super：" + super.getSessionId(request, response));
            return super.getSessionId(request, response);
        } else {
            //如果请求头中有 authToken 返回sessionId
            request.setAttribute(ShiroHttpServletRequest.REFERENCED_SESSION_ID_SOURCE, REFERENCED_SESSION_ID_SOURCE);
            request.setAttribute(ShiroHttpServletRequest.REFERENCED_SESSION_ID, id);
            request.setAttribute(ShiroHttpServletRequest.REFERENCED_SESSION_ID_IS_VALID, Boolean.TRUE);
            return id;
        }
    }
}

